September 2, 2008 
Only a year late, I just got a notice from an insurance company telling me that we had several prescription claims processed under the wrong insurance card. Apparently, they allowed our pharmacy to process claims for over 2 months after we had switched insurance.
Why is this my problem to deal with? Shouldn’t the insurance company have responsibility for maintaining the eligibility file? Shouldn’t the pharmacy have made sure my insurance was current? Now, I have to either pay $300 or go back to the pharmacy and ask them to reverse out claims that are over a year old.
What a pain! Of course, I am going to the pharmacy. I had coverage so why would I pay out-of-pocket.
Enabling Healthy Decisions 
The same thing happened to me when I changed as well. Very annoying.
It’s your problem to deal with because patients are the ones who have to live with the consequences of coverage or medical errors. You should pay the $300 out of pocket so that you can become a more informed, financially-engaged, empowered health care consumer!